Supercharger on an Automatic trans

[jimmy4645]

Is it true supercharging an automatic transmission cannot handle the excessive amounts of torque and horsepower??

Thinking about getting the Stillen Supercharger Stage II for my 06 G35 sedan 5 AT

[Beancooker]

With a VB mod (valve body mod... aka shift kit) and a large transmission cooler, it should do allright. This is a topic in the Maxima forum every other month. Even though it's a G35 and not a Maxi, it is still the same principle. Hope the install goes well, and you'll have to post some before and after dyno stats.

[booger]

Ive been running a Vortech for 6000 miles and I know if other with many more miles , with no problems . A SC will put far less stress on the transmission than a Turbo would . Im running 430 whp and 13.5psi with my Vortech

[G_whizz]

NICE!! How does that feel? 430hp on a G!!

*sigh* One day...

[joe603]

Why did you choose vortec over others (Procharger, Stillen)?

[AddictionG35]

Are Superchargers the same in the sense that you have to upgrade the internals with a turbo charger? And more importantly, my 03 G has... *cringe* 60k miles on it... sigh... is it not really good idea to put any S/C or Turbo in it unless I had the money to rebuild the engine? And god, have you guys seen this? A JWT TT G35 with 760rwhp 629 ft-lb torque?!?! Ugggghhh!!!! Orgasm!

[Gimli G35]

700 holy .... , 13.5 PSI is holy crap , you have full built engine ?!?!?

Turbos are more fun though , more of the turbos spool up and your back goes BAM!

and Vorteck dont require a cowl hood... or ugly hood

the Shops G runs at 14 PSI Greddy Turbos 560HP right now going to be way way way more...

whats it feel like ?? Like wroom wroom wroom , peels tires , eye balls go into brain!

[AddictionG35]

God I think you misunderstood or maybe I am now, but I don't have a G with 700, the person in the video does, take a look at the dyno in the vid. I would give my left lugnut for that car though. That's why I was asking the questions. I don't have anything but a preloved G with 60k miles on it, JWT Pop Charger, 5/16 spacers and Stillen Cat back. That's why I was asking if it's wise to install in a engine that old or if I should consider a rebuild first.

GOD I wish I had 760 hp lmao

[Gimli G35]

rebuild to make it last , or build a new engine ,

and i understood i doubt its 720RWHP , unless that thing is built and has custom turbos ...

if you install now , i promise it wont last very long

[AddictionG35]

Yup guess it was me just reading it wrong lol Either way, it sure would be something to have THAT MUCH hp huh?! Wow, lol I would orgasm everytime I started it

[jimmy4645]

God I think you misunderstood or maybe I am now, but I don't have a G with 700, the person in the video does, take a look at the dyno in the vid. I would give my left lugnut for that car though. That's why I was asking the questions. I don't have anything but a preloved G with 60k miles on it, JWT Pop Charger, 5/16 spacers and Stillen Cat back. That's why I was asking if it's wise to install in a engine that old or if I should consider a rebuild first.

GOD I wish I had 760 hp lmao

Hey man. Did you feel a power boost when you isntalled the pop charger, spacer and cat exhaust??

[soul_hfk]

are u saying wit a Stillen s/c u have to change the hood? Vorteck doesnt? cause when they come out wit them for the G35x i would like to look into 1 but not liking having to change the hood to

[joe603]

are u saying wit a Stillen s/c u have to change the hood? Vortech doesnt? cause when they come out wit them for the G35x i would like to look into 1 but not liking having to change the hood to

The Stillen SC is a roots-style blower. It sits on top of the intake plenum...which will not clear the stock hood. You have 2 options, get a hood cowl that sits on a stock hood after a hole has been cut out, or an aftermarket hood with the cowl built in.

The Vortech is a centrifugal supercharger that works very similar to a turbo. It is not mounted on the plenum, it's mounted in the front of the engine, near the belts. Like a roots-type blower, it gets its power from the engine via the belts. This is why they say superchargers require HP to make HP. Some of the drag cars have blowers that take 600HP to turn!!! (of course they make 2,000HP with a total output in the 4k range )

Then turbo...they get power from the exiting exhaust to turn a compressor, which is connected to another compressor via a common shaft. This is how they provide power, and why they are considered more efficient.

Now the reason everyone says to go turbo is because they're thinking of a twin kit. Of course 2 compressors will make more power!!

[Gimli G35]

Joe , way to sum it alllll up ...

Mostly the reason why people choose turbos is also , who wants to lose HP to make it lol. and Turbos throw you into your seat at full spool

there is always!! i mean always draw backs to both systems ...Turbo = Lag (sometimes )SC = Runs off engine power .. lose Hp then makes it back

Super Chargers are releativly safer than turbos

[joe603]

The only reason superchargers are "safer" for the G35 is because they build up boost from one compressor. Put 2 superchargers on, and I guarantee you'll be thrown back just as much as twins, and of course be harder on the engine! In fact, that is one of the benefits of Supercharging in general compared to turbocharging- the instant power surge. They both have there +'s and -'s, as you stated. The engine also plays a critical role in which system is better...

To answer the original poster's question, the AUTO trans should hold up with power levels under the 400RWHP mark. Most FI kits will be just under that, turbo or super. If you upgrade your valve body you can go higher...but you'd also need to beef up the stock block.

[AddictionG35]

Hey man. Did you feel a power boost when you isntalled the pop charger, spacer and cat exhaust??

Yeah, it wasn't like a wicked crazy difference but I can definitely say that I noticed a bit of difference. I most noticed it when I took my intake off to take it in to the dealer and have them take a look at my idle. It was considerably more sluggish to me without my intake on. I couldn't WAIT to get it back home and reinstall my Popcharger.

[AddictionG35]

So a supercharger will put just as much stress on the engine as a Turbo then I take it? Sigh, I want to boost my car sooo bad, but I guess I just have too many miles on it to do it and have it last for a while...

[joe603]

Any FI system will put stress on the engine! However, if you have it tuned properly it should be ok.

[blkonblk350gt]

i will be going supercharged on my auto g too after i sell my wheels and nitrous kit. you shouldnt have a problem with stillen stage 2 on an auto g seeing as with the stage 2 you won't put out more then 315whp

[MUNNNJEE]

with the proper supporting mods you should be kicking some butt out there.

valve body, transmission cooler, oil cooler, torque converter, stick to a 2.5" exhaust maybe a 3.12 pulley...all depends on how much HP/TQ you want to make



Edit by C-Kwik - No links to competing forums

[tollboothwilley]

+1

I'd say that you should be fine @ 60K miles as long as:

oil cooler & oil pan spacer, transmission cooler

with an auto transmission, you will want the valve body done though, or else the shift lag will drive you nuts.